Multiple-spindle drill-head.



A. H. REHER.

MULTIPLE SPINDLE DRILL HEAD.

APPLICATION FILED MARJQA 1913 1,079,023 Patented Nov. 18.1913

A. H. BEI-IER.

MUL'IPLE SPINDLE DRILL HEAD.

APPLXGATION FILED MAR.19, 1913,

2 SHEETS'SHEET 2y fof the the latter. The gears 65, 31, move with the` l46 is provided with a 10 l retable in bearings 48, 49, exemplified as bushing in the plates 36, 37. An end-thrust bearing 50 is provided for this drill-spindle exem lied as a collar 51 bearmg'against the p ate 37 and nuts 52, 53, screwed about the threaded lower end 54 of the spindle. Balls 55 are received in runways between -the 4,collar 5,1,agnd the nut 5 2. The spindle gear 56.

The spindle 46 is provided'wi-th a tapersocliet 57 for receiving the drill 58. For removing the drill there is a hole 59 in the casing with which a hole 60 in the upper end spindle may be caused to register, the holesbeing arranged to receive a suitable knock-out pin against the end of the drill. The hole m the casing is arranged to be closedby a cap 61 swinging on a pin 62. An intermediate ear 65 rotates on Studs 66 in bearings 67, siown as bushings located in the plates 36, 37. The gear 65 is meshed by the gear 31 and in turn meshes with the gear 56 on the drill-spindle 46 for turning spindle 46 in the lateral adjustment of the latter, and in the. form shown there is a simultaneous movement of the plates 36, 37, with said gears and spindle when said spindle is adjusted.

The drill spindle47 is journaled in bearings 70, Ilxexemplified as bushings and 72 f plates 73 is an end-t rust bearin therefor. 'he endthrust bearing 72 is s own as comprising 74, provided with runways in 'which balls 75 are received, a shoulder 76 on the spindle bearing against the plate 74. The spindle is held in upward relation by means of a nut 77 and a jam-nut 78, threadabout the upper threaded 4end 79 of the ls indie, a collar 80 being interposed between t e nut I7 and the bushing 7 0. The spindle y Y 7 has a gear 83 thereon shown as an elon gated gear.

A gear 84 is ineshed by the' gear 30 on the arbor and meshesvwith the gear 83 and rotates on a stud 85 secured to vthe casing, the stud `having a flange 86 received in a recess in the gear 84. The spindle 47 has a taper-socket 89 in which a drill 90 is received. The spindle is provided with a slot 91 and the wall of the casing is provided with a slot 92. A suitable drift pin may be forced through these slots against the end of the drill for releasing the drill.'

The bushing is arranged to be clamped in place in a clamp-bearing 95, shown as a split-bearing, having a;clampbolt 96 be` tween the ears 97, 98, of saidsplit-bearing, for clamping said ears toward cach other 'and thereby clamping the bushing, In order to avoid axial adjustment of the spindle 47 beyond limits which insure proper meshing between the gears 83, 84, I provide the bushing with a slot 99 in which a limiting screw 100 in the clamp-bearing 95 is reeeived; if it is desired to axially adjust for clamping and unclamping the spindle 47,'the split-bearing thereof is loosened and the spindle adjusted to proper axial posit-ion, and the bearing again tightened for clamping the bushing in place in adjusted position.

For locating the plates 36, 37, I prefer to provide substantially annular rabbets in which said respective plates are received. 'lhe peripheral walls 101, 102, of these rev cesses locate the plates centrally with relution to the arbor 28. The wal 101 is interrupted at 103 to permit proper meshing betweenithe gears 83, 84.

Thebases of the recesses preferably form shoulders 104, 105, which may b'e annular shoulders. The plates 36, 37, are arranged to be forced toward t-he shoulders for locating said plates and rigidly connecting the same with the casing of my improved device after adjustment of the laterally movable spindle.

For securing the parts in place I prefer to provide the plates with peripheral grooves 108, 109, shown as ta ered in crosssection, in which correspon ingly ta ered shoes 110 111, are received, the shoes eing clamped by means of screws 112, 113, hav- 1ng` conical ends 114, 115, received in conical;

recesses. The axes of said conical ends of the screws are normally non-incident to the axes of said respective conical recesses.

Forcing the screws inwardly will force the tapered ends of the screws against that side of the' tapered recesses in the shoes nearest the shoulders, for forcing the said shoes and plates toward said shoulders, and

thereby clamping the plates in adjusted po- I sitions by agencies which exert great clamping force with littleA exertion. T-he screws areshown as provided with knurled heads the parts wit-hout the use of tools.

I have shown the driving connection between the arbor of my improved device in the present exempliication as consisting of a plug 121 shown tapered at both ends, the

one end -thereof being received in the usual taper-socket 20 of the drill-mandrel of the machine' and the other end thercof received-l in a tapersocket 123 of the arbor 28. The

upper endv of the wall, of the socket 123 may be provided with a recess 124 for receiving. a pin 125 in the spindle. extend through the varbor for receiving a knock-out pin for knocking out the plug. from-the taperLsocket in the arbor,

The end-thrust bearing 127 may be pro vided between the casing and the arbor, shown accomplished by a collar 128 received about the upper end of the arbor in which the arbor rotates, and a nut. 129 screwed about the upper threaded end 130 of ine arbor, a. jam-nut 131 clamping `the nut 129, the collar 128 and nut 129 having anti-friction. Vballs 1321. therebetween for A hole 1126 may I l NP-hand* the arbor' sii 'piag said The'f wwc. :y sind respecive pluies in L snif; afinar und spindle. and n saxd czwmg and naled i spindles, said trains of gearing located in the hillow of said bell-like casing closed by said -p ate.

6. In a multiple spindle drill-head, the combination of a bell-like casi an arbor joumnled therein, a closing p ate at the mouth o said bell-like casing, a drill-spindle joumal d in saidplate, a drill-spindle joursaid casing, and vtrains of in diff ent planes parallel to said p ate between said arbor and said respective drillsnindles, said trains of gearing located' in the hollow of said bell-like casing closed by said plate, said train bf gearing between said A arbor and second-na ied drill-spindle comprising an elongated gear on said secondnamed drill-spindle, and means for the adjustment axially of said second-named drillspindle and elongated ar.

7. In a multiple 'spmdle drill-head, the combination of a bell-like casing having a plurality of substantially annular shoulders,

a pair of plates respectively coperatin with said shoulders. an arbor central with re ation lto saidshoulders, a drill-spindle journaled 'in said plates, a drill-spindle journaled in said casing, said plates rotatable about said larbor for adjusting the distance between said drill-spindles, and wedge-clamps acting on said plates lfor clamping said plates toward said shoulders and permitting retraction of said plates from said shoulders.

8. In a multiple spindle drill-head, the combination with the longitudinally shift-` able sleeve and the drill mandrel rotatable therein, of a easing, a Aclamp sleeve, said v clamp sleeve having a clamp-bearing at one end thereof about said longitudine, shiftable. sleeve and a bearing fat the`other end thereof about said casing, said vcasingfprovided with an annular groove, clamp-shoes in s aid groove, and clamping screws in said last-named bearing extending substantially into said shoes whereby said casing is suspended from said sleeve during clamped or unclamped relation of said shoes. y

9. In a` multiple spindle; drill-head, the

` `mmhination-of a bell-like casing, a plate for spind e journaled i'n said cas1ng,driving4 las journaled -in said casing, a drill-spindle projectin through said plate, a seeonddrillmeans between said arbor and said drillspindles, and means for adjustment-,of said' first-named drill-spindle and plate about the axis vof said arbor for adjusting said first-l named drill-spindle ,towardand frornsaid 'second-namedv drill-spindle. Y

. I',-v In a multiple spindle drill-head, the

,combination of a caslng, a pair of plates therein, an arbor,'a drill-s indle journaled in said lates, a ear on saidv arbor, a gear'on said rill-spin le, an intermediategear having journal 'support in lsaid plates and meshinn with said gear on said arbor and with ring 1 said geei'r en said drill-spindle, said three gears located between sald plates, a drillspindle Yjournaled in said casing, a second an arbor in saidcasing, a drill-Spindle 'jonrnaled in said'plat'es,a gear on said arbor, a gear on said `drill-spindle, an intermediate gear having journal support in 'said plates and meshing with said ar on said arbor and with sald gear onsai drill-spindle, said three gears located between said plates, a 'drill-spindle journalediin sai'd casing, a second gear on said arbor, an intermediate gear journaled on said casing and meshing with said last-named gears on said' last-named rdrill-spindle and arbor, saidlast-named three gears located outside"said-plates, and said plates with said firstnamed drillspindle and s'aid gear thereon and said rstnamed intermediatel gear adjustable .about the ax'is .of said arbor for adjusting the distance between said drill-spindles, and means `for clamping. said jplates toward said shoulders. .i e

12. In a multiplespindle drillheadthe combination of'a casing, a air of plates in said easing,A an arbor insai casing, a drillspindle journaled in. said plates, a. gear on said a'rbor, a gear on said drill-spindle, an

intermediate gear having journal support -in said plates and meshing with said gear onfsaid arbor 'and -with saidgear on said .drill-spindle, said three gears located between said plates, a drill-spindle journaled in said casing and having longitudinal movement `therein for lengthwise adjustment between ysaid drill-spind es,a second gear on-saidj arbor, an intermediate gear journaled on said easing and meshing with said last-named gears on said last-named drillspindle and arbor',l saidl last-named three gears locatedutsi te said plates, and said las plates with said inst-'named drill-spindle v and said gear thereonand said first-named intermediate gear adjustable about the axis rof said arbor for -adjusting the .dist'ance be-l tween said drill-spindles.

13. In amultpl spindle 'drill-head, the combination of-an open-ended casing provided with ,a-,shouldem an arbor, Idil lotatable aboutls'aid arbor, a drill Bex-7 f malingv through' said page, gasping p fovided with a peripheral groove havin" a radially inclined upper Wall, a elanip-s toe in said groove, said clamp-shoe provided with a tapering reress, and a clamp-screw in said casing having a conical end coperating with the wall of said recess for elainping said plate against said shoulder.

14. In a multiple spindle drill-head, the combination of an open-ended easn provided with concentric annular gui es of different diameters, a pair ot' plates guided by said respective guides, the larger of said plates forming a closing plate for said eas-- ing, an arbor central with relation to said plates, a drill-spindle journaled in. said platee, a gear thereon between Said plates, a gear on said arbor with which said lastnanied gear has operative connection, a drillspindle journaled in said easing outside said annular guides, a gear on said arbor, an intermediate gear meshing therewith, a gear on said last-named spindle, the smaller one of said guides being interrupted for permitting meshing of said intermediate gear and said last-named gear, said plates rotatable in said guides for adjusting the spindle journaled therein toward and from said lastnanied spindle, and arranged for moving said last-named spindle under said intermediate gear, and means for Clamping said plates rigid 'to said easing.

1.5. ln a iiiultiple spindle drill head, the combination of a bell-like Casing, an arbor `ionrnaled therein, a gear on said arbor, a plate, said plate journaled in said easing and said arbor having a journal in said plate, a drill-ri'iindle journaleil in said plate, a gear on said spindle havingr operative connection with said lirst-nal'ned gear, a drill-spindle, and gearing between said arbor and said seeond-nained drill-spindle, and said plate rotatable about said spindle for adjusting the lateral distance between said drill-spindles.

ln testimony whereof, l have hereunto signed my name in the presence of two subsrribing Witnesses.

AUGUST H. REHER.

Witnesses:

CHARLES E. lVEBER, THERESA M. SILBER. 

